389263682078 has 4 divisors (see below), whose sum is σ = 583895523120. Its totient is φ = 194631841038.

The previous prime is 389263682053. The next prime is 389263682083. The reversal of 389263682078 is 870286362983.

It is a semiprime because it is the product of two primes.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 389263682078.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97315920518 + ... + 97315920521.

It is an arithmetic number, because the mean of its divisors is an integer number (145973880780).

Almost surely, 2^389263682078 is an apocalyptic number.

389263682078 is a deficient number, since it is larger than the sum of its proper divisors (194631841042).

389263682078 is a wasteful number, since it uses less digits than its factorization.

389263682078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194631841041.

The product of its (nonzero) digits is 41803776, while the sum is 62.

The spelling of 389263682078 in words is "three hundred eighty-nine billion, two hundred sixty-three million, six hundred eighty-two thousand, seventy-eight".